Juhan Ulfsak (born April 18, 1973 in Tallinn) is an Estonian actor.

In 1995, he graduated as an actor from the Viljandi Culture College (where he later worked as a drama teacher), while simultaneously improving his skills at the Helsinki Theater College. Since 1998, an actor at the Von Krahl Theater. Over the years, he has worked with many different directors and theater troupes in Estonia and abroad. Received several awards as an actor (Estonian Theater Awards Best Actor Award 2012 and others).